Alastair J. Potts

Background This study investigates orbitally-forced range dynamics at a regional scale by exploring the evolutionary history of Nymania capensis (Meliaceae) across the deeply incised landscapes of the subescarpment coastal lowlands of South Africa; a region that is home to three biodiversity hotspots (Succulent Karoo, Fynbos, and Maputaland-Pondoland-Albany hotspots). Methods A range of methods are used including: multilocus phylogeography (chloroplast and high- and low-copy nuclear DNA), molecu...

Wanpeng eWang, and Zongze eShao, and bobo eCai

Abstract: Recent investigations of extreme environments have revealed numerous bioactive natural products. However, biosurfactant-producing strains from deep sea extreme environment are largely unknown. Here, we show that Dietzia maris As-13-3 isolated from deep sea hydrothermal field could produce di-rhamnolipid as biosurfactant. The critical micelle concentration (CMC) of the purified di-rhamnolipid was determined to be 120 mgL-1, and it lowered the surface tension of water from 74±0.2 mN m-1 ...

O. B. Andersen, and Y. Cheng, and X. Deng, and M. Steward, and Z. Gharineiat

The combination of the coarse temporal sampling by satellite altimeters in the deep ocean with the high temporal sampling at sparsely located tide gauges along the coast has been used to improve the forecast of high water for the North Sea along the Danish Coast and for the northeast coast of Australia. For both locations we have tried to investigate the possibilities and limitations of the use of satellite altimetry to capture high frequency signals (surges) using data from the past 20 years. T...

Md. Naimul Haque, and Hiroshi Katsuchi, and Hitoshi Yamada, and Mayuko Nishio

Long-span cable-stayed bridges are susceptible to dynamic wind effects due to their inherent flexibility. The fluid flow around the bridge deck should be well understood for the efficient design of an aerodynamically stable long-span bridge system. In this work, the aerodynamic features of a pentagonal-shaped bridge deck are explored numerically. The analytical results are compared with past experimental work to assess the capability of two-dimensional unsteady RANS simulation for predicting the...

M. W. Lomas, and D. K. Steinberg, and T. Dickey, and C. A. Carlson, and N. B. Nelson, and R. H. Condon, and N. R. Bates

Photosynthetic CO₂ uptake by oceanic phytoplankton and subsequent export of particulate organic carbon (POC) to the ocean interior comprises a globally significant biological carbon pump, controlled in part by the composition of the planktonic community. The strength and efficiency of this pump depends upon the balance of particle production in the euphotic zone and remineralization of those particles in the mesopelagic (defined here as depths between 150 and 300 m), but how these pro...

David A. Anderson, and Marcus E. Walz, and Ernesto Weil, and Peter Tonellato, and Matthew C. Smith

Climate change-driven coral disease outbreaks have led to widespread declines in coral populations. Early work on coral genomics established that corals have a complex innate immune system, and whole-transcriptome gene expression studies have revealed mechanisms by which the coral immune system responds to stress and disease. The present investigation expands bioinformatic data available to study coral molecular physiology through the assembly and annotation of a reference transcriptome of the C...

José Mª Navas, and Mark Thrush, and Silvia Zanuy, and Jesus Ramos, and Niall Bromage, and Manuel Carrillo

To determine whether an increase in the quantity of lipids ingested by sea bass (Dicentrarchus labrax) broodstock could improve egg quality, three year-old sea bass were fed three different diets: a natural diet (Control group), and two artificial diets containing 10% or 17% of total lipids. In two consecutive reproductive seasons, the spawning results, the lipid classes and the fatty acid composition of the eggs were studied. No differences in the absolute content of lipids or in the percentage...

Thomas J. Browning, and Katherine eStone, and Heather eBouman, and Tamsin A. Mather, and David M. Pyle, and Mark eMoore, and Victor eMartinez-Vicente

Transient micronutrient enrichment of the surface ocean can enhance phytoplankton growth rates and alter microbial community structure with an ensuing spectrum of biogeochemical feedbacks. Strong phytoplankton responses to micronutrients supplied by volcanic ash have been reported recently. Here we: (i) synthesize findings from these recent studies; (ii) report the results of a new remote sensing study of ash fertilization; and (iii) calculate theoretical bounds of ash-fertilized carbon export. ...

J. Krug, and G. Durand, and O. Gagliardini, and J. Weiss

Submarine melting of the calving face of tidewater glaciers and the mechanical back force applied by the ice mélange layer are two mechanisms generally proposed to explain seasonal variations at the calving front of tidewater glaciers. However, the way these processes affect the calving rate and glacier dynamics remains uncertain. In this study, we used a finite element-based model that solves the full Stokes equations to simulate the impact of these forcings on two-dimensional theoretical flow ...

Iis Diatin, and U. Kusumawardany

<p>Pacific white shrimp is one of the primadona of fishery commodities. This shrimp is superior as it resists to diseases and also high productivity. Jati Hasil Diri (JHD) located in Cantigi Indramayu is one of the pacific white shrimp culture company. In order to develop the business, this company planned to extent their pond area from 26 to 42 Ha. This plan was therefore needed to be financially analyzed to confirm its feasibility. There were two different scenarios of area extension, first sc...

Tobias Glück, and Andreas Maercker

Kun-Yen Lu, 呂昆諺

碩士 / 國立臺灣科技大學 / 機械工程系 / 104 / Plasma electrolytic oxidation coating was prepared on 6063 aluminum alloy by electrolyte of Na2SiO3 and KOH. different duty cycle and frequency response of plasma processing liquid to the surface oxide film, further installation of cooling fins do tests to mini-computer, and then to XRD, Scanning Electron Microscopy (SEM), Energy Disper-sive Spectrometer (EDS) analysis of the material composition and surface roughness analysis. The alumina film surface roughness...

Huang, Wei-Cheng, 黃威程

碩士 / 國立交通大學 / 電子研究所 / 106 / This thesis proposes a new and simple hot-chuck measurement method for the extraction of the thermal resistance of FinFETs. The intrinsic transconductance that eliminates the parasitic source/drain resistance effect can serve as a temperature sensor to characterize the device temperature rise due to self-heating. Our method requires only DC measurements without the need of specific test patterns. In addition, based on 5-nm technology node, we have investigated the opt...

Chang, Hsiang-Hao, 張香晧

碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 106 / It is important to understand the fish behavior by tracking path and distribution dynamics of swimming. In the past studies, the continuous captures from video images of fish’s movement were mainly to analyze the fish behavior, but it could not record the whole movement in continuous time series and had the time gap. In this study, we used the automated tracking software (EthoVision XT 13) to analysis the swimming behavior and social behavior of Acanthopagrus ...

Lai, Jun-Wei, 賴軍維

碩士 / 國立清華大學 / 電子工程研究所 / 107

CHANG, CHUN-YEN, 張駿彥

碩士 / 明新科技大學 / 電子工程系碩士班 / 106 / Abstract Insulated Gate Bipolar Transistor (IGBT) is a popular power discrete device. The gate voltage of the MOSFET controls the high input impedance of the transistor, and it also uses the BJT's double-loaded sub-stream to achieve high current and low on-voltage control performances. By the way, IGBTs can also work with high reverse bias and is thus considered the prime power discrete. However, in order to understand the electrical performances of IGBT, some alt...

LIAO, KUN-HUNG, 廖崑宏

碩士 / 明新科技大學 / 電子工程系碩士班 / 106 / Insulated Gate Bipolar Transistor (IGBT), based on benefits of high input impedance and high current gain, is popular as a power discrete, which is applied to many varieties of applications. IGBT sustains comparably higher power because it uniquely controls high current at high applied voltage. Nevertheless, authors expect to explore the underlying electrical performances of IGBT without using curve tracer with high power measuring capability. IGBT devices with cer...

HUANG,WEN-YANG, 黃文敭

碩士 / 明新科技大學 / 電子工程系碩士班 / 106 / In today's nano-process era, component sizes are getting smaller and smaller, and electronic products are required to have high performance, low cost, and small size. In order to achieve the above requirements, it is imperative to find better components than the conventional two-dimensional MOSFETs. Here we find three-dimensional fin field-effect transistors (FinFETs). In deep nanometer applications, It is a very good component, but due to the large amount of manuf...

LAI, CHIH-JUI, 賴致睿

碩士 / 國立高雄師範大學 / 電子工程學系 / 107 / In this work, P-type Tri-Gate FinFETs were investigated by using hot carrier effect (HCE) with different work functions, channel length and fin numbers. Under thermal equilibrium, the larger band bending could be found with the increasing of metal work function thus cause the increasing of saturation current and reduction of threshold voltage. For the high work function device, the increasing of metal ions in the gate electrode would enhance the probability of inte...

Tzu-Yun Nieh, 聶慈筠

碩士 / 國立中山大學 / 材料與光電科學學系研究所 / 107 / Several promising technologies such as high-speed computing, big data and IoT depend on the innovation of memory devices. The non-volatile memory can access information without power supply. However, its access speed is slow that it’s necessary to develop the next-generation memory. The merits of next generation of memory are energy saving, fast access speed and large capacity. Among them, Resistive Random Access Memory (RRAM) is regarded as the most potential ...

Chih-Ho Yang, 楊致和

碩士 / 國立虎尾科技大學 / 航空與電子科技研究所 / 102 / The multi-conjugate heat transfer for the discrete block heat sources is widely encountered in engineering applications, such as cooling of electronic equipments, photovoltaic cells and products of light emitting diode. This study aims to investigate the conjugate conduction－natural convection characteristics for block heat sources mounted on the wall in a 3-D closed cabinet. Attention is given to the enhancement of cooling performance by installing fin and con...

Huang, Bo-Rong., 黃柏蓉

碩士 / 國立清華大學 / 電子工程研究所 / 105 / abstract hide

Hsieh, Ting-Huan, 謝定寰

碩士 / 國立清華大學 / 電子工程研究所 / 105 / abstract hide

Chang, Yi-Hung, 張屹宏

碩士 / 國立清華大學 / 電子工程研究所 / 105 / abstract hide

Hsu, Chia-Ling, 許嘉玲

碩士 / 國立清華大學 / 電子工程研究所 / 105 / abstract hide

Chen, Meng-Yang., 陳孟揚

碩士 / 國立清華大學 / 工程與系統科學系 / 107 / Electrical characteristics and interface layer quality can be improved, and leakage current can be reduced in FinFET by appropriate activation process. The drain current can be enhanced and reverse current of junction can be decreased by suitable depth of ion implantation. Doping activation and ion implantation always play important roles in electrical characteristics of FinFET. In this thesis, far infrared light(10.6μm) and visible green light(532nm) were used for...

Tsai, Shang-Fu, 蔡尚甫

碩士 / 國立清華大學 / 工程與系統科學系 / 107

Liao Shi Xian, 廖仕賢

碩士 / 國立勤益科技大學 / 冷凍空調系 / 105 / In face of the problem of global warming, energy conservation and emission reduction has become an important topic at present. In recent years, great attention has been paid to indoor environmental quality affected by climate changes in Taiwan. This research applied solid dehumidification to replace the traditional dehumidification to improve the environmental humidity. In addition to the reduction of energy consumption, the regeneration performance of solid dehumid...

Weng, Heng-Jui, 翁珩瑞

碩士 / 國立交通大學 / 電子研究所 / 106 / In current semiconductor device process, the process variability is a crucial issue. For all characteristics associated with process variation, random variation of threshold voltage is especially important. In this thesis, with the help of commercial 3D technology computer-aided design (TCAD) Sentaurus, we build up our simulation structure calibrated with respect to Intel published 14-nm technology node FinFET device. TiN is chosen to be the metal gate material. We as...

CHUANG, CHIAO-FENG, 莊喬丰

碩士 / 國立高雄大學 / 電機工程學系碩博士班 / 106 / To enhance electrical characteristics and reliability, material and structure of device are continuously innovate---Traditional planar MOSFET is replaced by 3D FinFET due to its performance and as well as the capability of scaling. In this work, Tri-Gate FinFETs with 16nm channel length and 10nm fin width are investigated. Some different phenomena may occur when device structure is transformed from planar MOSFET to 3D FinFET. The influence of the Active Surface A...

Wang, Tai-Min, 王泰閔

碩士 / 國立清華大學 / 電子工程研究所 / 106 / abstract hide

Hsu, Yi-Wen, 許奕文

碩士 / 國立清華大學 / 工程與系統科學系 / 106 / The carrier mobility of MOSFET with nano-scale is reduced by replacing SiO2 with high-k gate dielectric. Channel material selection and interfacial layer quality are crucial to enhance carrier mobility. In this thesis, SiGe is used as channel material, carrier mobility and electrical properties of FinFET are enhanced by super-lattice (SL) epitaxially. Although EOT can be reduced by IL with CF4 plasma treatment, the leakage and interface trap density are increased. ...

Hsu, Chen-Chieh, 徐振傑

碩士 / 國立清華大學 / 動力機械工程學系 / 105 / This study investigates the airside performance and friction factor of 12 samples of smooth wavy fin-and-tube heat exchanger. All samples have large diameter (D_C=16.3mm) amount of tube rows (2, 4, 6 row), spacing of fin pitches (3 and 1.8mm), and cross sections (circular and oval). It is found that the heat transfer coefficient of circular samples increase as the amount of tube rows increases from N=2 to N=4. For oval samples, as the amounts of tube rows increase,...

FAN, MAN-TING, 范嫚婷

碩士 / 逢甲大學 / 材料科學與工程學系 / 106 / Physical limits such as short channel effects (SCEs), degradation of carrier mobility and reduced power consumption began hindering the obedience of Moore’s Law while devices scaling. Therefore, the appearance of High-K Metal Gate and Fin Field Effect Transistors has overcome these problems. In recent years, the Internet of Things (IoT), Artificial Intelligence (AI), and Big Data have gradually developed. The low power devices are necessary when a large number of de...

Yang,Chong Wei, 楊崇偉

碩士 / 明新科技大學 / 電子工程系碩士班 / 105 / Insulated Gate Bipolar Transistor (IGBT) is a power discrete with both benefits; one of them is high input impedance of MOSFET and the other is high current gain of BJT (Bipolar Junction Transistor). Successfully associated with the merits of high input impedance gate-controlling MOSFET and internal driven high current gain of Bipolar, Insulated Gate Bipolar Transistor (IGBT) performs well on controlling high power convey. IGBT may also work in the circumstance wit...

Wei-Kai Huang, 黃偉凱

碩士 / 建國科技大學 / 機械工程系暨製造科技研究所 / 105 / This work experimentally investigated the effects of wind duct and extended nozzle on the heat transfer characteristics of the fins/porous-media heat sinks normally under the impinging air flow driven by air compressor or motor fan. Total eight heat sinks made of various fin array and porous media and nine wind ducts combined with different duct length and extended-nozzle length were employed herein. The experimental results indicated that the effects of the w...

Wei-Chih Huang, 黃威智

碩士 / 國立中央大學 / 能源工程研究所 / 97 / The main purpose of this research is to design a new kind of evaporator/condenser heat exchanger, which is applied to an integrated, one-bed, closed-type adsorption air conditioning system. The micro-fin were manufactured on this heat exchanger to bring the surface tension in order to heat transfer enhanced. This research will test two kinds of different heat exchangers, one is with micro-fins and another is plain-fins. In compare of the experiment results of these t...

Li-YingHuang, 黃立穎

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 99

Chen, Hong-Wun, 陳鴻文

碩士 / 正修科技大學 / 機電工程研究所 / 96 / The present research designed and presented the experimental information on two-phase flow distribution of refrigerant R-134a in 11 round-horizontal manifolds of compact heat exchanger using the Venturi-type tube connected with the smooth tube, internally-spirally micro-finned tube within three different inserts (twined coil, twisted tape and wire coil) and without insert. The tests were run at the saturation temperature of 25℃, mass flux of 200-700 kg/m2s and 5 diff...

Chung-HouLai, 賴仲豪

碩士 / 國立成功大學 / 機械工程學系 / 102 / The present study applies the inverse method and computational fluid dynamics commercial software with the experimental data to investigate the heat transfer characteristics of the heat sink in a closed enclosure. The inverse method with finite difference method in conjunction with the least squares scheme is used to determine the average heat transfer coefficient on the fin. Due to the non-uniform distribution of the heat transfer coefficient, the plate-fin is divid...

Liou,Guan-Cing, 劉冠慶

碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 102 / The present study is to analyze the High Power Light Emitting Diode (HI-LED) lamp. Firstly, to investigate the LED heat conductive substrates, we chosen three materials including aluminum, copper, and vapor chamber to analyze through thermocouple measurement of LED temperature and heat conductive substrate temperature. Under the same wattage, the thermal diffusion and illumination properties of the heat conductive substrate are investigated. Finally, we choose ...

Jia-LongDo, 杜佳龍

碩士 / 國立成功大學 / 航空太空工程學系碩博士班 / 101 / The purpose of this work is to study the thermal stress behavior under a static thermal loading for the annular heat exchangers in order to reduce thermal stress and propose a novel design.Current finite element commercial implicit code - ANSYS WORKBENCH with a size optimization module is used to simulate and optimize the geometry of heat exchanger in the design process.Upon examining numerical thermal expansion results, the maximum stress is occurred on the in...

Yueh-Chun Wu, 吳岳峻

碩士 / 國立雲林科技大學 / 機械工程系碩士班 / 99 / The purpose of this research is explore the effect of cannelure configuration on compact heat exchanger in the forced convection flow. In the previous investigations, when the fin pitch of heat sink was 1mm, the dimple vortex generator fins to increase the cannelure configuration was quite effective to performance of heat transfer and pressure drop. Therefore, the objective of this thesis is to optimize the number of cannelure configuration s and their positions o...

Ying-ChiTsai, 蔡瑛吉

博士 / 國立成功大學 / 機械工程學系碩博士班 / 101 / This paper investigates the three-dimensional thermoelectric generator (TEG) are attached to a rectangular chimney used for venting flue gas from either a boiler or stove. The thermoelectric module consists of a hot plate, a flat spreader (or a built-in fin heat sink), a thermoelectric generator and a cold plate based on water cooling. In a thermoelectric analysis, the three-dimensional governing equations of heat and electric current in TEG at steady state are b...

Y. Y. Chou, 周彥儀

碩士 / 建國科技大學 / 機械工程系暨製造科技研究所 / 100 / This study experimentally investigated the fluid flow and heat transfer characteristics of the pin-fin heat sink partially filled with copper foams under the oncoming air flow. The copper foams would be filled into the longitudinal interval spaces of the pin-fin heat sink. The dimensions of the pin-fin heat sink including a 5 mm-thickness spreader were fixed: 120 mm in length, 60 mm in width and 32 mm in height. The porosity of copper foams was 0.97. Relevant ...

C. Y. Huang, 黃瓊瑤

碩士 / 建國科技大學 / 機械工程系暨製造科技研究所 / 99 / This study experimentally investigated the fluid flow and heat transfer characteristics of the pin-fin heat sink fully filled with brass beads under the confined rectangular impinging jet. The air was used as the coolant. The dimensions of the pin-fin heat sink were fixed: 120 mm in length, 60 mm in width and 27 mm in height (not including the spreader), Relevant variables were the side length of the pin fin ( s = 5－8 mm ), the space between pin fins ( gL = 2.6...

Chien Long Yu, 尤金龍

碩士 / 國立中興大學 / 機械工程學系 / 94 / The purpose of this experiment is to discuss the performance of the RHE thermal module. We will define 4 models to discuss. Type A is fin pitch 1.8mm (43 pieces)、Type B is fin pitch 1.8mm (29 pieces) and 2.1mm (12 pieces)、Type C is fin pitch 1.8mm (29 pieces) and 2.5mm (10 pieces)、Type D is fin pitch 1.8mm (15 pieces) and 1.575mm (16 pieces) and 2.1mm (12 pieces). The parameters of CPU heat transfer are 60W、70W、80W、90W and 100W. According to the experiment’s results...

Tsai, Wu-chuan, 蔡武全

碩士 / 正修科技大學 / 機電工程研究所 / 95 / This study reports an experimental investigation of heat transfer and pressure drop behavior during evaporation of R-290 and R-600a mixed with the lubricating oil (150SUS) in the micro-fin tubes within four different inserts (twined coil, wire coil, twisted tape, and helical-coil). The test were conducted at the saturation temperature of 15 , inlet oil concentration from 0 to 5 mass% oil, mass flux of 200 – 500 and the heat flux of 10.24 . The evaporation heat trans...

Yeh , Shiou-Ling, 葉秀玲

碩士 / 國立高雄應用科技大學 / 機械與精密工程研究所 / 96 / In recent years, numerical analysis of finite element method is widely used in metal forming. Simulation analysis was confirmed to be a very useful tool in the design stage. The goal of this research is to design a new evaporator for nitrogen liquid for semiconductor usage which is composed of aluminum tube and stainless pipe. The mechanical tests, such as macro etching, tensile test and hole-expansion test, were used to verify the strength of seam aluminum tu...

Yun-lung Chung, 鍾昀龍

碩士 / 國立成功大學 / 系統及船舶機電工程學系碩博士班 / 97 / There are many physical values that can not be obtained through direct measurement or calculation in real engineering problems. However they can be estimated by using inverse design method based on measuring data. These problems are called inverse problems. Inverse problems are also called optimum design problems. In many complex engineering problems this technique can be used to handle optimum design problems. In this thesis it is applied to forecast ...